<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
<style type="text/css">
/* 访问过 */
a:VISITED {
	color: red;
}
/* 未访问 */
a:LINK {
	color: yellow;
}
/* 悬停状态 */
a:HOVER {
	color: purple;
}
/* 点击状态 */
a:ACTIVE {
	color: green;
}
*{
  /* 边框: 粗细    实线     颜色 */
  border:1px solid red;
}
</style>
</head>
<body>
<a href="../imgs/a.jpg">超链接1</a>
<a href="../imgs/b.jpg">超链接2</a>
<a href="../imgs/c.jpg">超链接3</a>
<a href="../imgs/d.jpg">超链接4</a>
</body>
</html>